I've been an ice climber and a machinist for the last 20+ and 30+ years. Tired of the old style tooth design on my old BD Turbo Express, I started sharpening ice screws on a CNC milling machine. I created a design that is close to the new Laser Sonics and gave my screws a major boost in performance. These screws are sharp, very sharp. I've even sharpened brand new screw that I just bought because they didn't meet my quality standards. There is absolutely no heating of the screw either, unlike careless grinding can cause. The Grivel sharpening machine cannot reproduce any of the new generation tooth profiles.
I'm able to reproduce this on virtually any brand of screw, BD, Petzl, Grivel, DMM, Simmonds etc...
I also make Super Stubbies on a made to order basis. For more information see my website
or email me at email@example.com
Because setting up the maching is expensive and time consuming for just a few screws, I do what I call a batch run. Which means I collect all screws by a certain date and then machine them all at once. Don't worry I do 1 rack at a time so as not to mix up everyone's screws.
For now I'm doing it twice a year, spring and fall.
The next Batch Deadline is Friday April 24 2015.